PLEASE NOTE: PRECorp member owners can find their rate (per kWh cost) by adding the Base Rate and COPA columns on page one of the Tariff Rate Rider (below). This total should equal the amount in the Adjusted Rate Tariff (in the far right column) and will be the current rate. Commercial members, please look under the Class column for your business type, then on pages 2-4 please also add the Base Rate and COPA columns to calculate your rate.